this simple 3d print battery holder works great , use alligator clips on the probe ends
After reading about issues and solutions for this 18650 battery that was dead I was able to bring it back to life.
Connecting a good battery to a undercharged one brings the under charged battery voltage to a level where it can be recharged.
This is very quick process, 1 minute, check voltage on dead battery. You have to bring up the voltage enough to allow a charger to charge it.